Power adapter provided line winding

Abstract

A power adapter equipped with line winding function comprises an adapter body and a line winding means. The adapter body includes a housing and a conversion circuit held in the housing. The housing has a coupling side substantially in parallel with the conversion circuit. The coupling side includes at least one first coupling portion. The line winding means includes a first conducting line end and a second conducting line end that are extensible or retractable and electrically connected. The first conducting line end is extended into the housing to form electric connection with the conversion circuit. Hence the first conducting line end can transfer electric power from the conversion circuit to the second conducting line end. The line winding means further has at least one second coupling portion which is separable or latchable with the first coupling portion through forces. By coupling of the first and second coupling portions the line winding means can be coupled on the coupling side so that the adapter body and the line winding means are coupled to become a portable power adapter.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a power adapter equipped with line winding function to extend or retract a conducting line.BACKGROUND OF THE INVENTION[0002]These days information products are widely used in the society. Adapters are commonly adopted to mate all types of electronic devices to provide stable electric power. The conventional adapter includes an input end and an output end, such as one disclosed in R.O.C. patent gazette No. 529822 entitled “Power adapter equipped with a power indication light.” It is made at a size and shape to make carrying easier to be sold or carried with electronic products. It also has a power cord that can be bundled to facilitate storing. However, line retraction often is a problem on the general power adapter. To resolve the problem of line retraction R.O.C. patent No. M350899 entitled “Power adapter equipped with unit winding” proposes a structure in which a line winder (winding disc, helical spring or the like) is ...

AI Technical Summary

Problems solved by technology

However, line retraction often is a problem on the general power adapter.

While the power adapter thus formed can keep the exterior neat and tidy, and also provide line winding function, the interior space is limited and a cooling space is needed.

The line winder hinders air circulation inside and cooling power of the adapter suffers.

Moreover, the adapter of a greater power contains more voluminous circuit elements and requires a larger insulation space.

Hence having a built-in line winder in a large capacity adapter is not advisable.

Although the line winder is located outside the power adapter without occupying the interior space needed for cooling and holding circuit elements, there is no holding place to hold line winder.

Hence it offers no much improvement in usability than the conventional practice of carrying separated power adapter and line winder.

Its size and shape become important issues of portability.

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